Error: unable to find layout apr
 

i get this error when i do ./configure --with-mpm=worker --prefix=/usr/local/apache --enable-so --enable-cgi --enable-info --enable-rewrite
to install apache
Error: unable to find layout apr
this comes right after it check for the apr version:
APR Version: 0.9.3
** Error: unable to find layout apr
configure failed for srclib/apr

i was wondering what could be wrong and how i could get passed this and on with my install?